From ec4432a3883d2becf0468f014e3d3ed05c2f48e8 Mon Sep 17 00:00:00 2001
From: Ryan Lester <hacker@linux.com>
Date: Wed, 4 Oct 2017 20:26:00 -0400
Subject: [PATCH] allow setting total memory from JS (#608)

---
 dist-build/emscripten.sh | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/dist-build/emscripten.sh b/dist-build/emscripten.sh
index a360ef29..41365cc5 100755
--- a/dist-build/emscripten.sh
+++ b/dist-build/emscripten.sh
@@ -74,9 +74,13 @@ if [ "$DIST" = yes ]; then
   emccLibsodium "${PREFIX}/lib/libsodium.wasm.tmp.js" -O3 -s WASM=1
 
   cat > "${PREFIX}/lib/libsodium.js" <<- EOM
+    var root = this.global || this.self || this.window || this;
     if (typeof Module === 'undefined') {
       var Module = {};
     }
+    if (root.sodium && !isNaN(root.sodium.totalMemory)) {
+      Module.TOTAL_MEMORY = root.sodium.totalMemory;
+    }
     var _Module = Module;
     Module.ready = new Promise(function (resolve, reject) {
       var Module = _Module;